Delicate polishing
The healthiest way to file your nails is by using a glass file or minerals attached to a wood support or cardboard. First of all you must file them all the time in a single direction, to not destroy their free edge, because in their structure the fibers are having a certain orientation. Preferable, nail shortening with a nail file is made once a week. If there a crack appears or it breaks, your can fix it temporarily the zone with the help of a glass file, although you will get still to shortening.

A genuine thing
Rough and non-uniform surfaces on the nail can be leveled with a bufferl file for the surface of nail. This levels and gives an extraordinary shine effect, like as the nails were nail polished. Most of these nail files have at least 3 types of surfaces, which are numbered adequate for the filing stages.

Maintenance – strength
Beauty comes from the inside - available for nails too.
To make them healthy and resistant they need vitamin A (you can find it in carrots, peas, liver, oat flakes, soy) and gelatin (for example in jelly-candy, sweeten gelatin). Plus in fruits, green vegetables, brown bread and walnuts you can find other vitamins and essential minerals for the growth of your nails.